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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Common values for SHA-1 algorithms
*/
#ifndef _CRYPTO_SHA1_H
#define _CRYPTO_SHA1_H
#include <linux/types.h>
#define SHA1_DIGEST_SIZE 20
#define SHA1_BLOCK_SIZE 64
#define SHA1_H0 0x67452301UL
#define SHA1_H1 0xefcdab89UL
#define SHA1_H2 0x98badcfeUL
#define SHA1_H3 0x10325476UL
#define SHA1_H4 0xc3d2e1f0UL
extern const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE];
struct sha1_state {
u32 state[SHA1_DIGEST_SIZE / 4];
u64 count;
u8 buffer[SHA1_BLOCK_SIZE];
};
struct shash_desc;
extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
unsigned int len);
extern int crypto_sha1_finup(struct shash_desc *desc, const u8 *data,
unsigned int len, u8 *hash);
/*
* An implementation of SHA-1's compression function. Don't use in new code!
* You shouldn't be using SHA-1, and even if you *have* to use SHA-1, this isn't
* the correct way to hash something with SHA-1 (use crypto_shash instead).
*/
#define SHA1_DIGEST_WORDS (SHA1_DIGEST_SIZE / 4)
#define SHA1_WORKSPACE_WORDS 16
void sha1_init(__u32 *buf);
void sha1_transform(__u32 *digest, const char *data, __u32 *W);
#endif /* _CRYPTO_SHA1_H */